作者机构：
[Liu, Ming-Guo; Hu, Yang-Gen; Ding, Ming-Wu] Cent China Normal Univ, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Liu, Ming-Guo] China Three Gorges Univ, Hubei Key Lab Nat Prod Res & Dev, Yichang 443002, Peoples R China.
通讯机构：
[Ding, Ming-Wu] C;Cent China Normal Univ, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
Mono(iminophosphorane) 4 was selectively prepared from the reaction of 3,4-diaminothieno[2,3-b]thiophene 3 with excess triphenylphosphine, C(2)Cl(6), and Et(3)N due to intramolecular double hydrogen bond formation. Mono(iminophosphorane) 4 reacted with aromatic isocyanates to give stable carbodiimides 8, which were further treated with aliphatic secondary or primary amines to give 2-amino substituted thieno[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-ones 10 or 12 in the presence of a catalytic amounts of EtO(-)Na(+). However, in the presence of a catalytic amounts of potassium carbonate, the carbodiimides 8 were transformed into previously unreported 5H-2,3-dithia-5,7-diaza-cyclopenta[c,d]indenes 13 via direct cyclization in high yields. The reaction of carbodiimides 8 with phenols in the presence of a catalytic amounts of potassium carbonate gave a mixture of 2-aryloxy substituted thieno[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-ones 14 and 13. X-ray structure analysis of 10m supported the structure and the proposed reactivity of amino group. (C) 2008 Elsevier Ltd. All rights reserved.
摘要：
The crystal structure of the new title compound 2-ethoxy-3-n-butyl- benzofuro[2,3d]pyrimidin-4（3H）-one （C_(16)H_(18)N_2O_3, M_r = 286.32） has been prepared and determined by singlecrystal X-ray diffraction. The crystal is of monoclinic, space group P2_1/c with a = 13.7167（14）, b = 13.113（1）, c = 8.378（1） A, β = 98.992（2）^o, V = 1488.4（3） A~3, Z = 4, Dc = 1.278, F（000） = 608, μ = 0.089 mm~(-1), MoKa radiation （2 = 0.71073）, R = 0.0498, wR = 0.1238 for 2336 observed reflections with I 〉 2σ（I）. X-ray diffraction analysis reveals that all ring atoms in the benzo[4, 5]furo [2,3-d] pyrimi- dinone moieties are almost coplanar.
期刊：
Journal of Heterocyclic Chemistry,2008年45(5):1365-1369 ISSN：0022-152X
通讯作者：
Wu, Ming-Hu
作者机构：
[Xie, Jia-Li; Yang, Xu-Hong; Sun, Shao-Fa; Wu, Ming-Hu] Xianning Coll, Dept Chem & Life Sci, Xianning 437100, Peoples R China.;[Ding, Ming-Wu] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol Minist Educ, Wuhan 430079, Peoples R China.;[Xia, Qing-Hua] Hubei Univ, Coll Chem, Minist Educ Key Lab Synth & Applicat Organ Funct, Wuhan 430062, Peoples R China.
通讯机构：
[Wu, Ming-Hu] X;Xianning Coll, Dept Chem & Life Sci, Xianning 437100, Peoples R China.
摘要：
(Chemical Equation Presented) 1-Aryl-3-(2-ethoxycarbonylphenyl) carbodiimides 2, obtained from aza-Wittig reactions of iminophosphorane 1 with aryl isocyanates, reacted with primary diamines in 1:1 and 2:1 molar ratio under mild conditions to give selectively the regioisomers 3-aminoalkyl-2- arylaminoquinazolin-4(3H)-ones 3 and 3,3′-disubstituted bis-2-arylaminoquinazolin-4(3H)-ones 4 in good yields, respectively. To fully characterize the regioselectivity of aza-Wittig reactions of 1-aryl-3-(2-ethoxycarbonylphenyl)carbo-diimides with primary diamines, crystals of 4e were obtained, and its structure was determined by X-ray crystallography.
期刊：
Journal of Heterocyclic Chemistry,2008年45(6):1809-1813 ISSN：0022-152X
通讯作者：
Ding, Ming-Wu
作者机构：
[Zeng, Guo-Ping; Hu, Yang-Gen; Ding, Ming-Wu] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Peoples R China.;[Zeng, Guo-Ping] Hubei Univ Educ, Dept Chem & Life Sci, Wuhan 430205, Peoples R China.
通讯机构：
[Ding, Ming-Wu] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Peoples R China.
摘要：
(Chemical Equation Presented) The carbodiimides 5, obtained from reactions of iminophosphorane 4 with aromatic isocyanates, reacted with amines, phenols or ROH to give 2-substituted 5,6,7,8-tetrahydropyrido[4′,3′:4,5] thieno[2,3-d]-pyrimidin-4(3H)-one 7 in the presence of catalytic amount of sodium alkoxide or solid potassium carbonate in satisfactory yields.
摘要：
The title compounds 3,5,6,7-tetrahydro-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-ones(6) were syn-thesized by base catalytic reactions of secondary amines with carbodiimides 4,which were obtained from the aza-Wittig reaction of iminophosphoranes(3) with aromatic isocyanates.
摘要：
Abstract 2‐(3H)Benzothiazolethiones (2‐mercaptobenzothiazole) are prepared by an improved method, which utilizes microwave‐assisted cyclization of the corresponding ortho‐haloanlines with potassium O‐ethyl dithiocarbonate. By using microwave irradiation, the relative reactivity of 2‐chloroanilines was greatly improved to the same level as that of 2‐fluoroanilines and 2‐bromoanilines.
作者机构：
[Sheng-Zhen Xu; Yang-Gen Hu; Ming-Wu Ding] Key Laboratory of Pesticide & Chemical Biology of Ministry of Education,Central China Normal University,Wuhan,430079,P.R.China
会议名称：
第17届国际磷化学学术会议(The 17th International Conference on Phosphorus Chemistry)
会议时间：
2007-4-15
会议地点：
厦门
会议主办单位：
中国化学会
会议论文集名称：
第17届国际磷化学学术会议(The 17th International Conference on Phosphorus Chemistry)论文集
摘要：
Novel 5-(2-chlorophenylmethylidene)-2-thio-4-imidazolinones 3 and 2-Alkythio-5-(2-chlorophenylmethylidene)-4H-imidazolin-4-ones 4 have been synthesized via a tandem aza-Wittig reaction to develop more imidazolinones that may possess biological activities. The target compounds were identified by GC-MS, IR, and 1H NMR spectroscopies, and element analysis, and, in the case of 4k, its structure was established by single crystal X-ray diffraction. They showed not only fungicidal activities against Gibberella zeae, Cercospora beticola, Fusarium oxysporium, Rhizoctonia solani, and Botryosphaeria berengeriana, but also growth inhibition of Barnyard grass and Cole root and stalk.
